目的：評估8週中強度有氧舞蹈訓練對體脂肪過高者之年輕女性的心肺適能及心臟自律神經的影響。方法：以13位平均年齡為17.8±1.2歲，平均體重68.2±14.5公斤，平均體脂肪36.0±6.9%之年輕女性為受試者，接受8週中強度有氧舞蹈訓練。有氧舞蹈之處方為：以維持自覺疲乏度(ratings of perceived exertion，RPE)為12～13分，約為60至70%最大心跳強度，持續30分鐘，運動過程以適當的節奏及口令要求受試者動作儘可能做到最大，且要跟上漸增的108至132拍／分的節奏，每週3次，持續8週。於訓練第l及第9週收集身體組成及最大攝氧量。所有描述性資料以平均值±標準差方式表示，以配對t檢測各生理變項訓練前、後是否達顯著差異。結果：訓練後站立及最大運動的心肺適能皆有改善，其中攝氧量（VO2，23.2±3.1 vs 26.4±3.3毫升／分鐘／公斤）、二氧化碳吐出量（VCO2，25.2±4.5 vs 28.5±3.9毫升／分鐘／公斤）、氧脈（O2 Pulse，7.6±9.1 vs 10.0±1.0毫升／跳）及呼吸商皆呈現顯著上升；而氧氣換氣當量(VE/VO2，34.8±6.0 vs 32.4±4.7)、二氧化碳換氣當量(VE/VCO2，32.1±41 vs 30.1±4.2)皆達顯著下降(p<0.05)。換氣型態與最大心跳(192.6±9.6 vs 195.5±8.5)則無明顯的差異(p>0.05)。身體組成分析顯示訓練前、後之平均體重、肌肉重有顯著變化(p<0.05)。但體脂肪、腰臀圍比及心跳變異性各參數在訓練前、後未有顯著差異。單日飲食攝取訓練前、後也未達顯著差異。結論：中強度的有氧舞蹈訓練可以改善過重年輕女性的心肺適能，可能經由改善心搏量與骨骼肌攝氧能力。身體組成與心臟自律神經之活性未有顯著的改變，可能因訓練強度頻率太低及未嚴格限制飲食熱量。

Purpose: To test whether the moderate intensity aerobic dance is a useful exercise mode for weight loss in obese young-aged women. Method: Thirteen female (age 17.8 ± 1.2 years; initial body fat %=36.0±6.9%; BMI=26.5±5.5Kg/m^2) participated in our 2-month weight-loss program consisting of diet and exercise prescription. To compare the effectiveness of exercise modes, the body composition, heart rate variability (HRV) and oxygen consumption tests were administered before and after training. Pair t-tests were utilized to evaluate data. Result: After training the body mass, VE/VO2, and VE/VCO2 significantly decreased (p<0.05). The VO2, VCO2 and O2 Pulse significantly increased, while %body fat, waist circumference, maximal heart rate and HRV remained essentially unchanged. The diet intake also had no significant changes before and post training. Conclusion: The results suggest that the cardiovascular fitness changes for overweight female possibly through the combination of improved stroke volumed and peripheral O2 uptake mechanisms. To improve weight-loss efficiency, more restricted diet control program and increasing exercise frequency should be combined.